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diff --git a/src/kernels/xaxpy.opencl b/src/kernels/xaxpy.opencl
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+
+// =================================================================================================
+// This file is part of the CLBlast project. The project is licensed under Apache Version 2.0. This
+// project loosely follows the Google C++ styleguide and uses a tab-size of two spaces and a max-
+// width of 100 characters per line.
+//
+// Author(s):
+//   Cedric Nugteren <www.cedricnugteren.nl>
+//
+// This file contains the Xaxpy kernel. It contains one fast vectorized version in case of unit
+// strides (incx=incy=1) and no offsets (offx=offy=0). Another version is more general, but doesn't
+// support vector data-types.
+//
+// =================================================================================================
+
+// Enables loading of this file using the C++ pre-processor's #include (C++11 standard raw string
+// literal). Comment-out this line for syntax-highlighting when developing.
+R"(
+
+// =================================================================================================
+
+// Parameters set by the tuner or by the database. Here they are given a basic default value in case
+// this kernel file is used outside of the CLBlast library.
+#ifndef WGS
+  #define WGS 64     // The local work-group size
+#endif
+#ifndef WPT
+  #define WPT 1      // The amount of work-per-thread
+#endif
+#ifndef VW
+  #define VW 1       // Vector width of vectors X and Y
+#endif
+
+// =================================================================================================
+
+// Data-widths
+#if VW == 1
+  typedef real realV;
+#elif VW == 2
+  typedef real2 realV;
+#elif VW == 4
+  typedef real4 realV;
+#elif VW == 8
+  typedef real8 realV;
+#elif VW == 16
+  typedef real16 realV;
+#endif
+
+// =================================================================================================
+
+// The vectorized multiply-add function
+inline realV MultiplyAddVector(realV cvec, const real aval, const realV bvec) {
+  #if VW == 1
+    MultiplyAdd(cvec, aval, bvec);
+  #elif VW == 2
+    MultiplyAdd(cvec.x, aval, bvec.x);
+    MultiplyAdd(cvec.y, aval, bvec.y);
+  #elif VW == 4
+    MultiplyAdd(cvec.x, aval, bvec.x);
+    MultiplyAdd(cvec.y, aval, bvec.y);
+    MultiplyAdd(cvec.z, aval, bvec.z);
+    MultiplyAdd(cvec.w, aval, bvec.w);
+  #elif VW == 8
+    MultiplyAdd(cvec.s0, aval, bvec.s0);
+    MultiplyAdd(cvec.s1, aval, bvec.s1);
+    MultiplyAdd(cvec.s2, aval, bvec.s2);
+    MultiplyAdd(cvec.s3, aval, bvec.s3);
+    MultiplyAdd(cvec.s4, aval, bvec.s4);
+    MultiplyAdd(cvec.s5, aval, bvec.s5);
+    MultiplyAdd(cvec.s6, aval, bvec.s6);
+    MultiplyAdd(cvec.s7, aval, bvec.s7);
+  #elif VW == 16
+    MultiplyAdd(cvec.s0, aval, bvec.s0);
+    MultiplyAdd(cvec.s1, aval, bvec.s1);
+    MultiplyAdd(cvec.s2, aval, bvec.s2);
+    MultiplyAdd(cvec.s3, aval, bvec.s3);
+    MultiplyAdd(cvec.s4, aval, bvec.s4);
+    MultiplyAdd(cvec.s5, aval, bvec.s5);
+    MultiplyAdd(cvec.s6, aval, bvec.s6);
+    MultiplyAdd(cvec.s7, aval, bvec.s7);
+    MultiplyAdd(cvec.s8, aval, bvec.s8);
+    MultiplyAdd(cvec.s9, aval, bvec.s9);
+    MultiplyAdd(cvec.sA, aval, bvec.sA);
+    MultiplyAdd(cvec.sB, aval, bvec.sB);
+    MultiplyAdd(cvec.sC, aval, bvec.sC);
+    MultiplyAdd(cvec.sD, aval, bvec.sD);
+    MultiplyAdd(cvec.sE, aval, bvec.sE);
+    MultiplyAdd(cvec.sF, aval, bvec.sF);
+  #endif
+  return cvec;
+}
+
+// =================================================================================================
+
+// Full version of the kernel with offsets and strided accesses
+__attribute__((reqd_work_group_size(WGS, 1, 1)))
+__kernel void Xaxpy(const int n, const real alpha,
+                    const __global real* restrict xgm, const int x_offset, const int x_inc,
+                    __global real* ygm, const int y_offset, const int y_inc) {
+
+  // Loops over the work that needs to be done (allows for an arbitrary number of threads)
+  #pragma unroll
+  for (int id = get_global_id(0); id<n; id += get_global_size(0)) {
+    MultiplyAdd(ygm[id*y_inc + y_offset], alpha, xgm[id*x_inc + x_offset]);
+  }
+}
+
+// =================================================================================================
+
+// Faster version of the kernel without offsets and strided accesses. Also assumes that 'n' is
+// dividable by 'VW', 'WGS' and 'WPT'.
+__attribute__((reqd_work_group_size(WGS, 1, 1)))
+__kernel void XaxpyFast(const int n, const real alpha,
+                         const __global realV* restrict xgm,
+                         __global realV* ygm) {
+  #pragma unroll
+  for (int w=0; w<WPT; ++w) {
+    const int id = w*get_global_size(0) + get_global_id(0);
+    ygm[id] = MultiplyAddVector(ygm[id], alpha, xgm[id]);
+  }
+}
+
+// =================================================================================================
+
+// End of the C++11 raw string literal
+)";
+
+// =================================================================================================